<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 3//EN">
<HTML><HEAD>
<TITLE>IBM Visualization Data Explorer Programmer&#39;s Reference</TITLE>

<META HTTP-EQUIV="abstract" CONTENT="IBM Visualization Data Explorer
Programmer&#39;s Reference">
<META HTTP-EQUIV="contact" CONTENT="IBM Visualization Data Explorer
(ibmdx@watson.ibm.com)">
<META HTTP-EQUIV="owner" CONTENT="IBM Visualization Data Explorer
(ibmdx@watson.ibm.com)">
<META HTTP-EQUIV="updated" CONTENT="Tue, 16 Sep 1997 ">
<META HTTP-EQUIV="review" CONTENT="Fri, 14 Aug 1998 ">

<META HTTP-EQUIV="keywords" CONTENT="GRAPHICS VISUALIZATION VISUAL PROGRAM DATA
MINING">
<meta http-equiv="content-type" content="text/html;charset=ISO-8859-1">
</HEAD><BODY BGCOLOR="#FFFFFF">

<A NAME="Top_Of_Page"></A>
<H1>IBM Visualization Data Explorer Programmer&#39;s Reference</H1>
<B>&#91; <A HREF="#Bot_Of_Page">Bottom of Page</A> &#124; <A
HREF="progu224.htm">Previous Page</A> &#124; <A HREF="progu226.htm">Next
Page</A> &#124; <A HREF="../proguide.htm#ToC">Table of Contents</A> &#124; <A
HREF="progu097.htm#PToC20">Partial Table of Contents</A> &#124; <A
HREF="progu344.htm#HDRINDEX_START">Index</A> &#93;</B><HR><P>
<H3><A NAME="HDRDXIEVS" HREF="progu097.htm#PToC_319">DXIsElementValidSequential,
DXIsElementInvalidSequential</A></H3>
<A NAME="IDX1845"></A>
<A NAME="IDX1846"></A>
<A NAME="IDX1847"></A>
<A NAME="IDX1848"></A>
<P><STRONG>Function</STRONG>
<P>
Return the validity of a specified element of an invalid-component
handle when the queries come in sequential order.
<P><STRONG>Syntax</STRONG>
<BR>
<TT><STRONG><BR>
&#35;include &lt;dx/dx.h&gt;<BR>
<P><BR>
int DXIsElementValidSequential(InvalidComponentHandle handle, int index)<BR>
int DXIsElementInvalidSequential(InvalidComponentHandle handle, int index)<BR>
</STRONG></TT><BR>
<P><STRONG>Functional Details</STRONG>
<P>
Access with either routine is generally faster than with
<TT><STRONG>DXIsElementInvalid</STRONG></TT>
or
<TT><STRONG>DXIsElementValid</STRONG></TT>.
<P>
The result reflects both the initial conditions of
<TT><STRONG>handle</STRONG></TT> when it was created
with <TT><STRONG>DXCreateInvalidComponentHandle</STRONG></TT>,
and of the effects of any calls to
<TT><STRONG>DXSetElementInvalid</STRONG></TT>,
<TT><STRONG>DXSetElementValid</STRONG></TT>,
<TT><STRONG>DXInvertValidity</STRONG></TT>,
<TT><STRONG>DXSetAllValid</STRONG></TT>,
or
<TT><STRONG>DXSetAllInvalid</STRONG></TT>.
<TABLE><TR><TD ALIGN="LEFT" VALIGN="TOP"><B>Note:</B></TD><TD ALIGN="LEFT"
VALIGN="TOP">Accesses must be in sequential order; if they are not, the results
may be incorrect.
</td></tr></table>
<P><STRONG>Return Value</STRONG>
<P>
<TT><STRONG>DXIsElementInvalidSequential</STRONG></TT> returns TRUE (1) if
element <TT><STRONG>index</STRONG></TT> is marked invalid, and
returns FALSE (0) otherwise.
<P>
<TT><STRONG>DXIsElementValidSequential</STRONG></TT> returns TRUE (1) if
element <TT><STRONG>index</STRONG></TT> is marked valid, and
returns FALSE (0) otherwise.
<P><STRONG>See Also</STRONG>
<P>
<TT><STRONG>
<A HREF="progu126.htm#HDRDXCICH">DXCreateInvalidComponentHandle</A>,
<A HREF="progu150.htm#HDRDXFICH">DXFreeInvalidComponentHandle</A>
</STRONG></TT>
<P>
<A HREF="progu068.htm#HDRINVDATA">14.3 , "Invalid Data"</A>.
<P><P>
<P><HR><B>&#91; <A HREF="#Top_Of_Page">Top of Page</A> &#124; <A
HREF="progu224.htm">Previous Page</A> &#124; <A HREF="progu226.htm">Next
Page</A> &#124; <A HREF="../proguide.htm#ToC">Table of Contents</A> &#124; <A
HREF="progu097.htm#PToC20">Partial Table of Contents</A> &#124; <A
HREF="progu344.htm#HDRINDEX_START">Index</A> &#93;</B> <br><b>&#91;<a
href="../allguide.htm">Data Explorer Documentation</a>&nbsp;&#124;&nbsp;<a
href="../qikguide.htm">QuickStart Guide</a>&nbsp;&#124;&nbsp;<a
href="../usrguide.htm">User&#39;s Guide</a>&nbsp;&#124;&nbsp;<a
href="../refguide.htm">User&#39;s Reference</a>&nbsp;&#124;&nbsp;<a
href="../proguide.htm">Programmer&#39;s Reference</a>&nbsp;&#124;&nbsp;<a
href="../insguide.htm">Installation and Configuration
Guide</a>&nbsp;&#93;</b><br><p><b>&#91;<a
href="http://www.research.ibm.com/dx">Data Explorer Home
Page</a>&#93;</b><p><HR ALIGN=LEFT WIDTH=600><b>&#91;<A
HREF="http://www.ibm.com/">IBM Home Page</A>&nbsp;&#124;&nbsp;<A
HREF="http://www.ibm.com/Orders/">Order</A>&nbsp;&#124;&nbsp;<A
HREF="http://www.ibm.com/Search/">Search</A>&nbsp;&#124;&nbsp;<A
HREF="http://www.ibm.com/Assist/">Contact IBM</A>&nbsp;&#124;&nbsp;<A
HREF="http://www.ibm.com/Legal/">Legal</A>&nbsp;&#93;</b><hr><p>
<A NAME="Bot_Of_Page"></A>
</BODY></HTML>
